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Compiler Warning (level 2) C4307

  • Artikkeli

'operator' : signed integral constant overflow

The operator is used in an expression that results in an integer constant overflowing the space allocated for it. You may need to use a larger type for the constant. A signed int holds a smaller value than an unsigned int because the signed int uses one bit to represent the sign.

The following sample generates C4307:

// C4307.cpp
// compile with: /W2
int i = 2000000000 + 2000000000;   // C4307
int j = (unsigned)2000000000 + 2000000000;   // OK

int main()
{
}